Transport Pathways of Shelf Source Micronutrients to the Southern Ocean

dc.contributor.advisor Ito, Takamitsu
dc.contributor.author Birmingham, Ryan W.
dc.contributor.committeeMember Hartley, Dana
dc.contributor.committeeMember Ingall, Ellery
dc.contributor.department Earth and Atmospheric Sciences
dc.date.accessioned 2015-08-18T19:14:02Z
dc.date.available 2015-08-18T19:14:02Z
dc.date.created 2015-05
dc.date.issued 2015-08-18
dc.date.submitted May 2015
dc.date.updated 2015-08-18T19:14:03Z
dc.description.abstract We use a numerical ocean model to evaluate the hypothesis that the continental shelves are significant sources of dissolved iron to the Southern Ocean. We simulate the distribution of passive tracers released from the 18 different continental shelf regions of the extra-tropical southern hemisphere oceans using an offline, eddy-permitting transport model. The circulation fields are taken from the Southern Ocean State Estimate, and we only simulate the transport of inert tracers focusing on the physical transport pathways. The resulting tracer fields are then compared with the remotely sensed ocean color data, revealing a remarkable resemblance between the distributions of shelf-source tracers and the climatological surface chlorophyll-a concentrations. We further analyze the spatial pattern of simulated tracer fields in relation to satellite ocean color data. Dynamic ocean features such as the Southern Ocean fronts and coastal waters are reflected in both the tracer model and the observed biological productivity. Our results support the overall importance of continental shelves as a potential source region for dissolved iron. The relative importance of different shelf regions is found to vary significantly depending on the relevant circulation features.
dc.description.degree Undergraduate
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/53728
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Iron
dc.subject Ocean
dc.subject Biogeochemistry
dc.subject Nutrient transport
dc.subject Southern ocean
dc.title Transport Pathways of Shelf Source Micronutrients to the Southern Ocean
dc.type Text
dc.type.genre Undergraduate Thesis
dspace.entity.type Publication
local.contributor.advisor Ito, Takamitsu
local.contributor.corporatename School of Earth and Atmospheric Sciences
local.contributor.corporatename College of Sciences
local.relation.ispartofseries Undergraduate Research Option Theses
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relation.isOrgUnitOfPublication b3e45057-a6e8-4c24-aaaa-fb00c911603e
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thesis.degree.level Undergraduate
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